منابع مشابه
Screened DNA packs faster.
Despite being negatively charged, DNA can be compacted to almost crystalline densities inside virus capsids. However, how this is achieved has been debated for years. Most theoretical models predict that attractive DNA–DNA interactions — such as those resulting from the screening effect of nearby positively charged molecules — would facilitate DNA packaging by countering the effects of DNA self...
متن کاملExecuting Query Packs in ILP
Inductive logic programming systems usually send large numbers of queries to a database. The lattice structure from which these queries are typically selected causes many of these queries to be highly similar. As a consequence, independent execution of all queries may involve a lot of redundant computation. We propose a mechanism for executing a hierarchically structured set of queries (a \quer...
متن کاملCommunicative Exploration with Robot Packs
Exploration is a core challenge for RoboCup Rescue. Socalled communicative exploration is a novel strategy for multi-robot exploration that unlike other approaches takes the limits of wireless communication systems into account. Here, previous results that where achieved for a team of robots linked to a basestation are significantly extended to also cover robot packs, i.e., multi-robot teams th...
متن کاملkGamma distributions in granular packs
It has been recently pointed out that local volume fluctuations in granular packings follow remarkably well a shifted and rescaled Gamma distribution named the kGamma distribution [T. Aste, T. Di Matteo, Phys. Rev. E 77 (2008) 021309]. In this paper we confirm, extend and discuss this finding by supporting it with additional experimental and simulation data.
متن کاملDisordered spherical bead packs are anisotropic
Investigating how tightly objects pack space is a long-standing problem, with relevance for many disciplines from discrete mathematics to the theory of glasses. Here we report on the fundamental yet so far overlooked geometric property that disordered mono-disperse spherical bead packs have significant local structural anisotropy manifest in the shape of the free space associated with each bead...
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ژورنال
عنوان ژورنال: BMJ
سال: 1942
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.4242.524